Siemens SIMATIC S7-300 Reference Manual page 20
Comparison list for programming languages based on the international mnemonics
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Also See for SIMATIC S7-300:
- Manual (676 pages) ,
- Reference manual (574 pages) ,
- Installation and operating manual (356 pages)
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Basic instructions
Read/write access
Recommendation: program symbolically
✔
✔
Read data in little-endian format
✔
✔
Write data in little-endian format
✔
✔
Read data in big-endian format
✔
✔
Write data in big-endian format
✔
✔
Read memory address
✔
✔
Read memory bit
✔
✔
Write memory address
✔
✔
Write memory bit
✔
✔
Write memory area
Legacy
Recommendation: Program symbolically
✔
✔
✔
Move block
✔
✔
✔
Move block uninterruptible
✔
✔
✔
Fill block
✔
✔
Read field
Recommendation: indexed access to an array
✔
✔
Write field
Recommendation: indexed access to an array
A5E33285102-AB
Extended instructions
Description
Technology
STL
LAD / FBD
(not S7-1200)
BLKMOV
UBLKMOV
FILL
FieldRead
FieldWrite
Communication
SCL
READ_LITTLE
WRITE_LITTLE
READ_BIG
WRITE_BIG
PEEK
PEEK_BOOL
POKE
POKE_BOOL
POKE_BLK
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